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  <title>Binary-safe gz-file read</title>

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</div><hr /><div id="function.gzread" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">gzread</h1>
  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">gzread</span> &mdash; <span class="dc-title">Binary-safe gz-file read</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.gzread-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="type">string</span> <span class="methodname"><strong>gzread</strong></span>
    ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$zp</code></span>
   , <span class="methodparam"><span class="type">int</span> <code class="parameter">$length</code></span>
   )</div>

  <p class="para rdfs-comment">
   <span class="function"><strong>gzread()</strong></span> reads up to <em><code class="parameter">length</code></em> bytes
   from the given gz-file pointer. Reading stops when
   <em><code class="parameter">length</code></em> (uncompressed) bytes have been read
   or <acronym title="End Of File">EOF</acronym> is reached, whichever comes first.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.gzread-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<em><code class="parameter">zp</code></em></dt>

     <dd>

      <p class="para">
       The gz-file pointer. It must be valid, and must point to a file
       successfully opened by <span class="function"><a href="function.gzopen.html" class="function">gzopen()</a></span>.
      </p>
     </dd>

    
    
     <dt>
<em><code class="parameter">length</code></em></dt>

     <dd>

      <p class="para">
       The number of bytes to read.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.gzread-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   The data that have been read.
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.gzread-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-797">
    <p><strong>Example #1 <span class="function"><strong>gzread()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">//&nbsp;get&nbsp;contents&nbsp;of&nbsp;a&nbsp;gz-file&nbsp;into&nbsp;a&nbsp;string<br /></span><span style="color: #0000BB">$filename&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"/usr/local/something.txt.gz"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$zd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">gzopen</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$contents&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">gzread</span><span style="color: #007700">(</span><span style="color: #0000BB">$zd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">10000</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">gzclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$zd</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.gzread-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.gzwrite.html" class="function" rel="rdfs-seeAlso">gzwrite()</a> - Binary-safe gz-file write</span></li>
    <li class="member"><span class="function"><a href="function.gzopen.html" class="function" rel="rdfs-seeAlso">gzopen()</a> - Open gz-file</span></li>
    <li class="member"><span class="function"><a href="function.gzgets.html" class="function" rel="rdfs-seeAlso">gzgets()</a> - Get line from file pointer</span></li>
    <li class="member"><span class="function"><a href="function.gzgetss.html" class="function" rel="rdfs-seeAlso">gzgetss()</a> - Get line from gz-file pointer and strip HTML tags</span></li>
    <li class="member"><span class="function"><a href="function.gzfile.html" class="function" rel="rdfs-seeAlso">gzfile()</a> - Read entire gz-file into an array</span></li>
    <li class="member"><span class="function"><a href="function.gzpassthru.html" class="function" rel="rdfs-seeAlso">gzpassthru()</a> - Output all remaining data on a gz-file pointer</span></li>
   </ul>
  </p>
 </div>

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